Let's start with a disclaimer - it may feel as if COVID-19 has been around for ever, but this is still a relatively new disease and evidence is changing at speed. And as countries around the world see more cases and manage the pandemic in their own ways, lessons are being learnt.
This is a companion discussion topic for the original article at https://patient.info/news-and-features/coronavirus-how-quickly-do-covid-19-symptoms-develop-and-how-long-do-they-last